Latch



2 Sheets-Sheet 1 G. E. ROEDDING LATCH Filed Dec. 11', 1931 July 18,1933.

n M We July 18, 1933.

LATCH Patented July 18, 1933 usirE ifSTA sermon EQROE DI G, or GR 2 PATENTF Ann RAPIDS, ,nIonieANfAssIGNon To enANnfn rIDs" BRASSUCQMIPANUYV;or GRAN Harms, ivuorzreni A oonrose'rlon or: MICHIGAN LATCH Applicationfiled Deeembernll, 1931. sena vu i ssoevij The present inventionrelatcs'to latches-for refrigeraterdoors and the likeg andits ob-;

ject is, generally; to provide .a device of that characterhavingimproved means for urg f a ing the latching boltto its operative positon and for yieldingly holding the same in re traded-position andimproved means for v actuating the aforesaid means; and further, toprovide improved means for applying such 'a latch to a door member;'andfurthergto provide an improvedconstruction of the latch bolt. 7These general objects and any-other and more specific objectshereinafter appearing are attained by, and the invention findspreferable embodiment in, the structure and mechanism particularlydescribed in thebody of this specification and illustrated by theaccompanying drawings forming a part 'herev of, in which: 7 i

plan view of the free edge Figure 1 is a top I portion of a' partiallyopened swinging door closure'to which closure at laICh'lS applied,

and a horizontal sectional view. of; the jamh or casing of the door towhich amb the keeperfor the latchs bolt is applied; i

Figure 21s a sectional View Uf SELld parts taken on a horizontal planecorrespondingto line 2-2 of Figure 3, the closure being shown shut andthe latchs bolt in operativeor latching engagement with the keeper 1Figure 3 is a vertical sectional view of parts i seen in Figure 2 takenon line 33 of Figure2;

t Figure 4: is a vertical'sectional viewthereof taken on hne l-4. ofFigure 2 Figure 5 is aview' of the "latch and keeper similar to Figure3, but showingthelatchs bolt in retracted positiomand i Figure 6 is aview of said parts, similar to Figures and 5 butshowingthe latchs boltin anintermediate position;

V v V In these drawings-are shown a latch designated generally 1 appliedto'the free edge portion of onerniembe (U swi g l ure ofa door and akeeper 3 appliedto the other door member (the doorscasing or jamb) Thelatchcomprises ttlbOlli 5 movable into operative or latchingengagementlat its outer end with the keeper as shown in Figures 2" and '3 and toretracted position as;

V seen in Figure 5;:this bolt'beingth us movable slidably inthellustrated preferable embodi m nt-pfthe invention .A spr ng fi ressmgat (through intermediate parts; as hereinafter ts nemia": l;

describedllon the bolt andhaving its lower 1 end "8 movable in thegeneral directionofthe bolts movement so as to change the direction ofthe springs action by' thus moving said 1 lower end thereof, serves tourge thebolt outwardly into operative latching engage} ment with thekeeperwhen thespringiisin the. position seen in Figure 3' e. when thesprings lower end 8 is movedfaway from the 7 casing has a middleportion12 in whosenotch 13 rocks the lower end of agbar 14 extendinginside the coiled springfi, a second barfllfi also extending inside thespringand having its upper end rocking in a notch-16 in the bolt, thesebars having abutmentsn 17,01'1

which'the ends ot the "spring press; The V a latch has means formovingthe arm 9 to the position seen in Figure 3 comprisingamovr liabletrigger; desirably magnetite trigger 18 of the shown construction, whoseinner end portion 19, when the trigger is slid inwardly hereinafterexplained), engages the fr ee; lower end ofsaid arm 9 and swingsytheisame past the dead center position shown inrFigure (land tQYZai'dthe position seen"in.Figure 3,; thus shifting the axial direction of thespring!andfits direction of action; the A spring s expansion 1 now,urging v the bolt with the keeperseen i'nl Figure" 3;

1 I When 1. 9 0 is retracted bylth l tter i d1 2 openfthefclosure member2, it

:swings'the .arm 9 reverselyiand slightly be yond the deadcenterposition seen inFigure 6=to the position shown-in Figure 5; Inthis movementthe free end the arm 3; engages its operative-latchingengagement the inner end portion 19 (desirably inclined as shown) ofthe't'rigger 18 and moves it outwardlyto the .positioniindicated indotted retracted.

linesin Figure 5. n

As the pivotal mounting 11 of the arm 9 Sis intermediate the outer endsof the bars 14,

15, the arm and spring have a lever action about said pivot'll as afulcrum, sothat when the bolt -is retracted the trigger 18 is projectedand vice versa.

When the closure member 2 is nearing its shut position as seen in Figure1, the profjecting outerend 21 of the trigger 18-engages the other doormember 1, i. e. the outwardly bevelled face 22 of the keeper 3,andisthereby slidinwardly, so that when the closure is I shut, tliefltriggerhas moved inwardly far enough to engage the free endof arm 9 and swingit past said dead center "position,

a b'ight portion 25 embracing a pintle 26 on which a roller 27 turns,and parallel portions 28, 29 whose extremities are connected by a pintlegOonwhichrotates a roll 81 forming the bolts outer end which engages thekeeper andrides up on the inclined face 22 thereof if the closure beshut when the bolt is not *In such casethe bolt is slid inwardly byengaging said inclined face, and if thus moved sufficiently to cause thearm-9 to pro 7 ject thetrigger into engagement with said inclined faceand be-therebv moved reversely, thel'arm 9 will be. moved by the triggerto the position releasing the retracted bolt and moving it by the spring6 to operative latchingposition. The latch bolthasa: transverse" portion32 with whichthe short'arm 33- of the operating lever'20 engages to-retract the bolt by drawingthe levers handle 34; outwardly. Thisoperating lever is fulcrumed at 35 in the escutcheon plate 36 and isswung outwardly a'gainstthe pressure of a spring The latch casing, asbest shown in Figure 4, is made of two metal sheets, the forward sheet38 having horizontal sides 39, bent rearwardly, with jflanges eO turn'edfrom each other. The middle portion of this sheet has i a part al struckforwardly to provideaslide bearing thereunder for the trigger 18. Thecasings rear she'et-42-ha'sitsupper and lower edges bent overthelflanges 40 to hold the sheets tightly togetherandform therewiththree-ply ribs 43. The doors closurejmember 2 has arecess or mortise 44Lextendingfrom its free edge, with grooves 45 in each of its.

sides, The latch is applied to the closure" member by thrusting thecasing into this re-.

cess, with the ribs 43 tightly fitting slidably.

inthe grooves 45.

The parallel portions 28,29 of the bolt 5 bear slidably onthe oppositesides 39 of the casings sheet 38,. the roller 27 serving to lessen thefriction of said movement par'ticularly where the spring 6 would tend toincrease it. Screws are ShOWIl-fOr securing the latch and the keeper inplace and stops for 1 limiting-the movement of various parts are i alsoshown, as the inwardly bent stops 46 limiting the outward movement .ofthe bolt,

the stop 47 for the rearward movement of the arm 9, and the stop 48limiting the outward movement of thetrigger.

' It will be seen that the arm 9 together with V the spring 6 and itsbars 14, 15 constitute a lever member fulcrumed at 11 in its middle, thesprings ends (or their bars) on the oppo= site sides of said fulcrumpressing between the bolt and the free end 12 of the arm re-qspectively, this lever member in one swung position (Fig. urgingthe'boltto operative engagement with the keeper and in its oppositelyswungposition ig. 5) yieldingly holding the bolt retractedand readytobeengaged by the triggers end 19 to swing the arm (and thus the levermember as a whole) past the dead-center position (Fig. 6) so-that thesprings action may then urge the bolt to operative-position (Fig. 3).

It will also beseen that the upper endof this lever member (i. e. theupe'r end of the j bar15 thereof) is spring-pressed to rockingconnection with the bolt, while the lower endof the lever member (i. e.the'free end 12 of the arm) is adapted to strike or engage the triggerto move it outwardly or to be engaged by the trigger to swing the arm tothe posit1on seen in Figure? It is evident that other specific forms ofthe various parts of this latch may be adopted, accomplishing the samepurpose andhavlng substantiallythe same mode of operation wherefore theinvention is not to be limited to or by the particular. embodiment ofthe inbefore described.

I claim:

keeper applied to a door-member, a latch applied to a relatively movabledoor member comprising a bolt movable to operative engagement with thekeeper and to retracted position, a swingable arm, a spring pressing ingthe bolt to operative position in one swung position of the arm andyieldingly' invention illustrated by the-drawings or here 1. In a'device of the class described: a

directly between the arm and the bolt urgholding thebolt in retractedposition in another swung position of the arm, a trigger movable itsengagement with the firstinefntioned door member in the closing movementof the other door member to "swing the 2.111 a device of theclassdescribedz a latch applied to a swingable door fclosure having akeeper applied to the door casing,

T springs comprising a bolt slidably movable to operative engagementwith the keeper and to 'retracted position, a swingable arm, a springpressing directly between the arm and -the bolt urging the bolt tooperative position in one swungposi'tionof the arm and yieldinglyholdingthe bolt in'r'etracted position in another swung position ofthe' arm,atrig' ger slidably movablelby engagement with t in retracted positionin ai'iother position of said other end of the spring the" bolt being ithe door casing in the closing movement of the door closureand engagingthe arm to swing the arm to its first-mentioned position, and a handlefor movingthe bolt to retracted position.

3. In a keeper applied to a door member, a latch appliedto a relativelymovable door member comprising a bolt movable to operative positionengaging the keeper and to retracted po-f sition, a spring pressingbetween the bolt at one end of the spring and the second-men tioneddoormember at theother end'of the spring said other endbeing movable byengagement of the hereinafter'mentioned trigger therewith to change thedirection of the action so that the spring urges the bolt'to operativeposition in one positionof said other end and yieldingly holds the boltin retracted position in another position of said other end of thespring, trigger means movable by the first-mentioned door member in theclosing movement of the other door member for moving said other end ofthe spring to its position whereinthe spring urges the bolt tooperative: position, and means for retracting the bolt.

4. In a device of the class keeper applied to a door member and havingan inclined outer face, a latch applied to a relatively movable doormember comprising a bolt movable to operative position engaging thekeeper and to retracted position, a spring pressing between the bolt atone end of the spring and the second-mentioned door member at the otherend of the spring said other end being movable by engagement of thehereinafter-mentioned trigger therewith to change the direction of thesprings action so that the spring urge's'the boltto operative positionin one position of said other end and yieldinglyholds the bolt inretracted position in another position of said other end of the spring,trigger means movable'by its engagement with said inclined of thesecondmentioned door member device of the class described: a

described: a

'other'end' the spring-to position whereinthe spring urges the'bolttooperative p0 sition, and means for retracting ftlie'bolt:

5.'In a device of the class described'zla" keeper applied to a door"member and having .a recess and an inclined-outer face a latchapplied'to a relatively movable door member,

comprising a boltmovable to operative posi tion engagingiin said recessand to retracted position, a spring pressingbetween the'b'olt at one endof-the spring and the second-men tioned door member at the other endofth'e a spring said other end being movable iby enger therewith tochange thedirection of the bolttjooperative'position in oneposition ofsa d other end andyieldinglyholds the'bolt movable to retracted positionby its engagement with said inclined; face in the closing" I 'movementof the second-mentioned" door I member, trigger means movable by; itslater I a engagement with said inclined face in said closing movementfor moving said other end of the spring to its position whereinfthespring urges the, bolt to operative position,-' and handle means forretracting the bolt.

6. In a device of the clas s. described: .a'

95' kee er applied to adoor member, a latch appl ed to a relativelymovable door member comprising a bolt movable to operativeem gagen entwith the keeper andto retracted position, a lever member 'fulcrumed inits .160. iniddleadaptedto engage at one end with the; Y 1

bolt andat its other end with the hereinafteri mentioned trigger saidlever memberfin one swung position moving the bolt to operativepositionand in an oppositelyswung position moving said trigger reversely to thebolts ment with the first-mentioned door member movement atrigger ovableby its engage I v I in the closing movement of the, other'door member toswing the lever member to its first-mentioned position, and handle meansfor moving Ithe bolt to retracted position.-- v

7.In a device of'the class described: a

keeperapplied tola {door member, a latch applied to a relatively movabledoor member comprising a bolt movable to operative enj gagement withthekeeper and to retracted position, avlever member, fulcrumed'f'in itsmiddlecomprising a; spring pressing 'b g tween the lever memberfatoneside of its l l fulcrum andi the bolt at the opposite side of saidfulcrum to'nrge thebolt .to operative position in one swung position ofthelever' member and to yieldingly hold thefbolt in retractedposition'in another swung'position of the lever member, a triggermovable by its engagement with the first-mentioned door" member in theclosing movement of the other 7 door member to swing the levermember t0-'its first-mentioned position, and means" for ;moving the 'bolt toretracted position.

8." In a device of the class describedz a keeper appliedto a doormember, a, latch to retracted position.

applied to a relatively movable door member comprising a bolt movable tooperative en-. gagement wlth the keeper and to retracted position, alever member comprising a spring and an arm swingably mountedlntermediate the, ends or" the spring said, spring pressing vbetween thearm at one SlClQQOf 1ts pivotal moving the bolt 9. In a device of theclass described zla keeper applied to a door member, a latch applied toa relatively movable door member a comprising a bolt movable tooperative en gagement with the keeper and to retracted position, a levermember comprising a spring and an arm swingably mounted intermediate theends of the spring, the spring having, at

one end a rocking connection with the bolt and at its otherend pressingon the arm to urge the bolt to operative posltion lIiQOIlB swungposition of the arm andto yieldingly hold the bolt in retracted positionin an oppositely swung position of the arm, a trigger. movable toa'positionabutting-the free end of the arm toswing the same to 1tsfirst- -ment1oned position, and handle means for moving the bolt toretracted position;-'

- (GORDON ROEDDING.

Ina v.1

